What's your fsimage size? If its too high you would want to controlthe checkpoint transfer bandwidth to not affect the load at the NN.This is available via the JIRA HDFS-1457.On Mon, Mar 25, 2013 at 8:13 PM, Ivan Tretyakov<[EMAIL PROTECTED]> wrote:> Hi!>> We see DataNode heartbeat average time peaks in Ganglia up to 20-70 seconds> while SecondaryNameNode performs checkpointing.> See attached screenshots please.>> I would like to clarify if it is Ok, or not. And what kind of consequences> and risks it could bring up.>> --> Best Regards> Ivan Tretyakov

--Harsh J

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Harsh J 2013-03-25, 15:31

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